Sample Color
The Sample Color module provides a way to compare a specific image area with known colors to determine which
color is most representative of the area. The module performs an averaging over the specified image area
and compares this resulting value with color values entered into the Nearest Color list. Successive modules
can then access the results of this module via variables to trigger actions based on the results
of this module.
Interface
Instructions
1. Current Image - Move the red square to the place you want to sample the colors. You can move the entire square
by dragging the smaller red square in the center or by adjusting the individual corner squares.
To fine tune the positioning you can change the coordinates of the overall square using the
textboxes below in the Coordinates area.
2. Add Red/Blue/etc - Add the colors to compare to the sample square by clicking on one of the appropriate
buttons.
3. Add Custom - Add a custom color to the list
4. Add Current - Add the current intensity to the list
5. Add Variable - Add a variable that contains a color to compare to
6. Del/Del All - Delete a or all the selected colors in the list.
7. Display - Select the color and thickness of the line that will
be drawn on the actual image to reflect the sample area.
8. Sample Grid - Specify how the grid sample area is broken into rows and
columns. Creating more sample squares will convert the results into an array
of values.
9. Coordinates - As apposed to moving the editing squares in the Current Image
area you can fine tune the positions by updating the coordinates of each of the
editing squares. Note that you can also use the [ variable ] expressions in
each of the coordinate boxes to automatically move the sample area to different
locations. You can also specify an array to be used as the input to sample
locations. This array should contain at least 8 points per area (4x X,Y locations).
Example
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Variables
COLOR_SAMPLE - holds the current average intensity in hex format
COLOR_SAMPLE_RGB - holds the current average intensity in rgb integer format
COLOR_SAMPLE_NEAREST - holds the nearest color hex value to the sampled area
COLOR_SAMPLE_NEAREST_RGB - holds the nearest color rgb value to the sampled area
COLOR_SAMPLE_CONFIDENCE - specifies the confidence amount (0-100%) that
the nearest color is the current color.
See Also
Line_Profile
Sample_Line
RGB_Filter
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